Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : antibacterial

Wild Clary Plant Extract as Corrosion Inhibitor for Carbon Steel in Seawater Medium

Zainab S. Aziz; Rana A. Majed; Majid H. Abd

Engineering and Technology Journal, 2021, Volume 39, Issue 11, Pages 1646-1653
DOI: 10.30684/etj.v39i11.2151

Aqueous extract of wild clary has been used in place of a corrosion inhibitor in the corrosion control of carbon steel. The major components of this extract are Ethan amine, Amino-octadic, and 4H-Pyran-4-one. It has an excellent inhibition efficiency (IE) of 83.078% at a concentration of 20 (mL/L) and a temperature of 298 (K). The extract was characterized by FTIR and GC MS, where the antibacterial was tested and the protective film was analyzed on the samples using FTIR spectra. The protective film formed on the metal surface is confirmed using an electrochemical study by Potentiostat, which revealed that this extract was a mixed-type inhibitor.

Antibacterial Activity of Treated- Multiwall Carbon Nan tubes and Their Characterization

M. R. Mohammed; Adawiya J. Haider; Duha S. Ahmed

Engineering and Technology Journal, 2014, Volume 32, Issue 3, Pages 427-433

In this study, multiwall carbon annotates (MWNTs) were modified with concentrated sulfuric acid and nitric acid. The activity of f-MWCNTs toward the removal and inactivation of bacteria Gram negative Bacteria (E.coli) were examined. Fourier transformed infrared spectroscopy (FTIR) shows formation of oxygen containing groups such as C=O and COOH. Scanning electron microscopy (SEM) was used to characterize the treated -MWCNTs structure due to oxidation during acid treatment. Moreover, the treated MWCNTs exhibited antimicrobial activities towards E.coli using viable cell technique. Finally, these observations point to the potential use of MWNTs as building blocks for antimicrobial materials.

Study the Toxicity of Treated Multi Walled Carbon Anotubes (Mwcnts) on Escherichia Coli Bacteria and their Characterization

Adawiya J. Haider; Ali A. Tahaa; Thorria R. Marzoog

Engineering and Technology Journal, 2014, Volume 32, Issue 2, Pages 370-378

In this study, we investigate the antimicrobial activity of treated Multi Walled Carbon Nanotubes (MWNTs) by oil toward gram negative bacteria Escherichia coli(E.coli) and treated MWNTs is performed according to a chemical procedure introducing -COOH groups on their surface . Structural and morphological characterizations of samples have been carried out using SEM and FT-IR spectroscopy. In addition, the SEM images prove the antimicrobial activities of treated MWNTs to bacterial cells by adhesion activity of E.coli on MWNTs surface. Since the functionalization of Multi Walled Carbon Nanotubes (MWCNT-COOH) can be used as effective antimicrobial materials and indicate that severe cell membrane damage by direct contact with MWNTs is the likely mechanism responsible for the toxicity to the model bacteria.